// ==UserScript==
// @name D25Decrypter make a blog entry as private entry for Yahoo!360
// @namespace
// @description D25Decrypter make a blog entry as private entry for Yahoo!360
// @include http://blog.360.yahoo.com/*
// @include http://360.yahoo.com/*
// ==/UserScript==
// IMPORTANT ! PLEASE MODIFY YOUR SECRET KEY HERE BEFORE INSTALLING !!!
var key = 'your_key_goes_here';
var s1 = "This is my private writing<i title=\"";
var s2 = "\">.</i>";
var mark = ",/,/";
/*
Duc Nguyen Mar.25, 2006
(ducjava@gmail.com) - URL: http://www.mog4b.com
Version 1.0
Download session number: 00003
*/
function TEAencrypt(plaintext, password)
{
if (plaintext.length == 0) return(''); // nothing to encrypt
// 'escape' plaintext so chars outside ISO-8859-1 work in single-byte packing, but
// keep spaces as spaces (not '%20') so encrypted text doesn't grow too long, and
// convert result to longs
var v = strToLongs(escape(plaintext).replace(/%20/g,' '));
if (v.length == 1) v[1] = 0; // algorithm doesn't work for n<2 so fudge by adding nulls
var k = strToLongs(password.slice(0,16)); // simply convert first 16 chars of password as key
var n = v.length;
var z = v[n-1], y = v[0], delta = 0x9E3779B9;
var mx, e, q = Math.floor(6 + 52/n), sum = 0;
while (q-- > 0) { // 6 + 52/n operations gives between 6 & 32 mixes on each word
sum += delta;
e = sum>>>2 & 3;
for (var p = 0; p < n-1; p++) {
y = v[p+1];
mx = (z>>>5 ^ y<<2) + (y>>>3 ^ z<<4) ^ (sum^y) + (k[p&3 ^ e] ^ z)
z = v[p] += mx;
}
y = v[0];
mx = (z>>>5 ^ y<<2) + (y>>>3 ^ z<<4) ^ (sum^y) + (k[p&3 ^ e] ^ z)
z = v[n-1] += mx;
}
// note use of >>> in place of >> due to lack of 'unsigned' type in JavaScript
return escCtrlCh(longsToStr(v));
}
function TEAdecrypt(ciphertext, password)
{
if (ciphertext.length == 0) return('');
var v = strToLongs(unescCtrlCh(ciphertext));
var k = strToLongs(password.slice(0,16));
var n = v.length;
var z = v[n-1], y = v[0], delta = 0x9E3779B9;
var mx, e, q = Math.floor(6 + 52/n), sum = q*delta;
while (sum != 0) {
e = sum>>>2 & 3;
for (var p = n-1; p > 0; p--) {
z = v[p-1];
mx = (z>>>5 ^ y<<2) + (y>>>3 ^ z<<4) ^ (sum^y) + (k[p&3 ^ e] ^ z)
y = v[p] -= mx;
}
z = v[n-1];
mx = (z>>>5 ^ y<<2) + (y>>>3 ^ z<<4) ^ (sum^y) + (k[p&3 ^ e] ^ z)
y = v[0] -= mx;
sum -= delta;
}
var plaintext = longsToStr(v);
// strip trailing null chars resulting from filling 4-char blocks:
if (plaintext.search(/\0/) != -1) plaintext = plaintext.slice(0, plaintext.search(/\0/));
return unescape(plaintext);
}
// supporting functions
function strToLongs(s) { // convert string to array of longs, each containing 4 chars
// note chars must be within ISO-8859-1 (with Unicode code-point < 256) to fit 4/long
var l = new Array(Math.ceil(s.length/4))
for (var i=0; i<l.length; i++) {
// note little-endian encoding - endianness is irrelevant as long as
// it is the same in longsToStr()
l[i] = s.charCodeAt(i*4) + (s.charCodeAt(i*4+1)<<8) +
(s.charCodeAt(i*4+2)<<16) + (s.charCodeAt(i*4+3)<<24);
}
return l; // note running off the end of the string generates nulls since
} // bitwise operators treat NaN as 0
function longsToStr(l) { // convert array of longs back to string
var a = new Array(l.length);
for (var i=0; i<l.length; i++) {
a[i] = String.fromCharCode(l[i] & 0xFF, l[i]>>>8 & 0xFF,
l[i]>>>16 & 0xFF, l[i]>>>24 & 0xFF);
}
return a.join(''); // use Array.join() rather than repeated string appends for efficiency
}
function escCtrlCh(str) { // escape control chars which might cause problems with encrypted texts
return str.replace(/[\0\n\v\f\r\xa0!]/g, function(c) { return '!' + c.charCodeAt(0) + '!'; });
}
function unescCtrlCh(str) { // unescape potentially problematic nulls and control characters
return str.replace(/!\d\d?\d?!/g, function(c) { return String.fromCharCode(c.slice(1,-1)); });
}
function decodeMyHtml(text) {
text = text.replace(/&/g,"&");
return (text);
}
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
function encode64(input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
do {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) +
keyStr.charAt(enc3) + keyStr.charAt(enc4);
} while (i < input.length);
return output;
}
function decode64(input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
do {
enc1 = keyStr.indexOf(input.charAt(i++));
enc2 = keyStr.indexOf(input.charAt(i++));
enc3 = keyStr.indexOf(input.charAt(i++));
enc4 = keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
} while (i < input.length);
return output;
}
var Type = 'Z';
function StartFloat() {
if(document.all) {
document.all.AdFloater.style.pixelLeft = document.body.clientWidth - document.all.AdFloater.offsetWidth;
document.all.AdFloater.style.visibility = 'visible';
Type = 'A';
}
else if(document.layers) {
document.AdFloater.left = window.innerWidth - document.AdFloater.clip.width - 16;
document.AdFloater.visibility = 'show';
Type = 'B';
}
else if(document.getElementById) {
document.getElementById('AdFloater').style.left = (window.innerWidth - 35) + 'px';
document.getElementById('AdFloater').style.visibility = 'visible';
Type = 'C';
}
if (document.all) { window.onscroll = Float; }
else { setInterval('Float()', 100); }
}
function Float() {
if (Type == 'A') { document.all.AdFloater.style.pixelTop = document.body.scrollTop; }
else if (Type == 'B') { document.AdFloater.top = window.pageYOffset; }
else if (Type == 'C') { document.getElementById('AdFloater').style.top = window.pageYOffset + 'px'; }
}
function addEvent(oTarget, sEventName, fCallback, bCapture) {
var bReturn = false;
if (oTarget.addEventListener) {
oTarget.addEventListener(sEventName, fCallback, bCapture);
bReturn = true;
} else if (oTarget.attachEvent) {
bReturn = oTarget.attachEvent('on' + sEventName, fCallback);
}
return bReturn;
}
function encr()
{
var si = document.getElementById('sinput');
var s = TEAencrypt(si.value, document.getElementById('key').value);
s = s1 + mark + encode64(s) + mark + s2;
si.value = s;
si.focus();
si.select();
}
function decr() {
var si = document.getElementById('sinput').value;
// Remove heads & tails, only remain encrypted text
si = si.replace(mark, '').replace(mark, '').replace(s1, '').replace(s2, '');
si = decode64(si);
var s = TEAdecrypt(si, document.getElementById('key').value);
// s = s.replace(/<br>/, '\n');
document.getElementById('sinput').value = s;
}
/* Decrypt private msg on Blog */
var arr = document.getElementsByTagName ("div");
for (var i=0; i < arr.length; i++)
{
var innerH = arr [i].innerHTML;
// inject floating form into Edit Blog page.
if ( location.href.indexOf("compose") >= 0 && arr [i].className == "foot" ) {
// document.getElementsByTagName ("head")[0].innerHTML += "<script type='text/javascript' language='JavaScript' src='http://www.mog4b.com/y360.js'></script>";
// arr [i].innerHTML += "<table width='90%' bgcolor='white' border=1><tr><td>";
arr [i].innerHTML += "Your key: <input type='password' id='key' value=''><br>";
arr [i].innerHTML += "Paste your HTML here & encrypt it !<br>";
arr [i].innerHTML += "<textarea cols=40 rows=5 id='sinput' onclick='this.select();'></textarea><br>";
arr [i].innerHTML += "<input id='bencr' type='button' value='Encrypt'> ";
arr [i].innerHTML += "<input type='button' id='bdecr' value='Decrypt'><br>";
// arr [i].innerHTML += "</td></tr></table>";
addEvent(document.getElementById("bencr"), 'click', encr, true);
addEvent(document.getElementById("bdecr"), 'click', decr, true);
}
// find private msg & decrypt them
if ( arr [i].className == "content-wrapper" )
{
var pos = innerH.indexOf (mark);
if ( pos >= 0 )
{
var pos2 = innerH.lastIndexOf (mark);
var encryptedText = innerH.substring (pos + mark.length, pos2);
arr [i].innerHTML = innerH + "<HR>" + TEAdecrypt (decode64 (encryptedText), key);
}
}
}
